A very large event will be staged in the Trailhead Staging Area this weekend. And as a result of the event the Trailhead will be closed Friday afternoon and all day on Saturday. Mountain bikes will be racing on the Pemberton Trail all day long. The park is asking that anyone using the Pemberton Trail on December 14, 2013 travel in a counter clockwise direction. The trail will not be closed but to avoid accidents, move counter clockwise all day long.